Catapleiite and Chlorite group Optical Properties

Catapleiite

Chlorite group

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1 Optical Properties

1.1 Luster

Vitreous

Vitreous, Pearly

1.2 Pleochroism

Not Available

1.3 Dispersion

NANA

0.007 1

1.4 Transparency

TransparentUlrich Henn and Claudio C. Milisenda, Gemmological Tables (2004)

Not Available

1.5 Refractive Index

1.590-1.6291.57-1.67

1 3.25

1.6 Optic Character

Not Available

1.7 Crystal System

Monoclinic Prismatic H-M Symbol (2/m) Space Group: B2/b (pseudo-HEX)

monoclinic

1.8 Birefringence

0.039Not Available

0 0.296

1.9 Clarity

TransparentUlrich Henn and Claudio C. Milisenda

Not Available

Catapleiite and Chlorite group Optic Character

Catapleiite and Chlorite group optical properties play a significant role while distinguishing these gemstones from each other. These properties are influenced by the Catapleiite and Chlorite group Physical Properties like crystallographic symmetry, pleochroism,etc. in the crystal. Some of the optical properties are refractive index, luster, optic character, pleochroism etc. Prominent among these is Catapleiite and Chlorite group optic character. You might have noticed your gemologist rotating the gemstone while testing it. Rotating a gemstone along its optic axis helps in determining its optic character.

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Catapleiite and Chlorite group Transparency

Similar to their colors, Catapleiite and Chlorite group transparency can also be used as criteria for their primary identification. Although transparency cannot be the only criteria for gemstone identification, it can efficiently used in gemstone grading. Talking about their transparency, Catapleiite is Gemmological Tables (2004) and TransparentUlrich Henn and Claudio C. Milisenda while Catapleiite is Gemmological Tables (2004) and TransparentUlrich Henn and Claudio C. Milisenda in appearance.